Jointer fence



June 29, 1937. v H, E, A Z 2,085,131

JOINTER FENCE Filed Jan. 8, 1934 Z Y Ill fill gal w Z \5375 i I l: 6 :16 Z629 .38 Y/ a 48 f .19 48 17 f 439 INVENTOR lag/ 73552 ES g 25 .5

AT'EORNEY Patented June 29, 1937 UNITED STATES PATENT OFFICE The Delta Manufacturing Company, Mil- I waukee, Wis., a corporation of Wisconsin Application January 8, 1934, Serial No. 705,687

6 Claims.

The invention relates to gages or fences for jointers and other machine tools.

An object of the invention is to provide a work-guiding gage or fence for the table of a machine tool, such as a jointer, capable of being tilted to different angular positions with respect to the table, and having a mounting which includes a member slidable along the table and pivotally connected with the fence, the slidable member and fence being independently retained in adjusted position by clamping means so arranged as to facilitate manipulation by the operator.

Another object of the invention is to provide a fence mounting in which the separate clamping operations on the slidable member and fence are efiected by an actuating member common to them both. v

The invention further-consists in the'several features hereinafter described and claimed.

In the accompanying drawing, Fig. 1 is a front end view of a jointer fence cmbodying the invention, the fence being mounted on a jointer table in perpendicular position with respect to the surface of the table, two other angular positions of the fence being indicated in dotted lines;

Fig. 2 is a sectional elevation of the mounted fence taken along the line 22 of Fig. 1; Fig. 3 is a sectional detail view of a swingable stop member taken along the line 33 of Fig. 1; Fig. 4 is a rear elevation of a slidable bracket for the fence, parts being shown in section, and the stop member being swung out of its stopping position;

Fig. 5 is a side elevation of the slidable bracket, parts being broken away;

Fig. 6 is a side View of a sleeve forming part of the fence clamping means; I Fig. 7 is a sectional view taken along the line 1-7 of Fig. 2, and I Fig. 8 is a side elevation of the fence and its mounting, parts being broken away, and the swingable stop member being shown in stopping position. 3

In the drawing, 15 designates the work-supporting table of a jointer having the usual cutter-head, not shown. The front end of the table is provided with an open-ended guide channel 16,

-5 which extends transversely of the table in parallel relation to the axis of the cutter-head. The

channel opens laterally at the fiat front end wall I! of the table, the plane of this wall being parallel to the axis of the cutter-head and perpendic 55 ular to the top surface of the table. The top and bottom portions of the channel at the front thereof are formed by. parallel ribs i8, behind which extend parallel grooves IS.

A metal bracket or plate 20 has a fiat rear face slidably bearing against the flat front end wall 5 i I of the jointer table, and has a rearwardly projecting guide portion 2| which enters the guide channel it and has parallel top and bottom edges slidably fitting between the parallel ribs I8 of the channel. The bracket 28 has a fiat front 0 face parallel to its rear face and therefore perpendicular to the top surface of the table. The upper edge of the bracket is slightly lower than the upper surface of the table. An arcuate rib 22 is secured in the upper portion of the bracket 15 20 and projects from the front face of the bracket, a portion of the rib also projecting above the bracket. The axis about which the arcuate rib I extends is normal to the front face of the bracket and lies in, or slightly above, the plane of the top 20 surface of the table.

A crescent-shaped sector plate 23 has a fiat rear face slidably bearing against the fiat front face of the bracket 20, and is provided with an arcuate groove 24 within which slidably fits the 5 arcuate rib 22 on the bracket, to thereby define for the sector plate an axis of angular displacement lying in or near the top surface of the table and perpendicular to the front end face of the table. 30

A threaded metal tube 25 is rigidly secured in the bracket 20 and projects forwardly at right angles to the bracket. The tube passes through an arcuate slot 26 formed in the sector plate. A rotatable nut 21 on the tube serves to clamp the 35 sector plate 23 to the bracket '20, the clamping pressure being transmitted through washers 28, 29, and 30 on the tube, the intermediate washer 29 being a spring washer.

A bolt 3| extends through the bore or aperture 40 of the tube 25 and is rigidly secured at its threaded rear end to a rectangular plate 32 which slidably fits in the grooves I9 and bears against the rear faces of the ribs I8. The front end of the bolt projects forwardly beyond the tube and is 45 threaded to receive a nut 33. A sleeve 34 is threaded onto the tube 25 to form a front extension thereof, and is engaged at its front end by the nut 33. The rotatable nut 33 serves to clamp the bracket 20 to the front end face of the table, clamping pressure being transmitted through the sleeve 34 and tube 25. A wrench member 35 is slidably and rotatably mounted on the sleeve 34 between the clamping nuts 21 and 33 and is provided at opposite ends with serrated nut sockets 36 and 31 to selectively engage and turn these nuts. The wrench member is movable axially to three different positions, these being. two nut-engaging end positions and an intermediate neutral position. The wrench member is selectively held in these positions against rattling by a spring-pressed detent ball 38therein entering any oneof three axially spaced peripheral grooves 39 formed on the sleeve 34. The wrench member 35 is here shown to havea ball-ended hand lever 40. The rear end of the sleeve 34 limits the loosening movement of the nut 21, so that the spring washer 29 will not lose its friction-imparting action on the sector plate 23.

A suitably ribbed fence member or gage plate 4| is rigidly secured to the upper portion of the sector plate 23 by means of screws 42, and presents a flat work-engaging face 43. The fence member 4| overlies the table and may tiltably engage the table at a point spaced from the sector plate, as disclosed in my United States Patent No. 1,790,288, issued January 1, 1931. A clearance groove 24' is formed in' the front end face of the fence member to receive the arcuate rib 22.

An arcuate scale 44 is secured to the sector plate 23 and co-operates with a pointer 45 carried by the bracket 20. In the present instance, the scale is of the zero-center type, and the fence is tiltable 45 in either direction from its vertical position, the extreme tilted positions of the fence being indicated by dotted lines in Fig. 1.

In order to expedite and insure the accurate. placement of the fence in any one of several much-used angular positions, such as the vertical position and positions spaced 45 from each side of the vertical position, stop means are provided for limiting the angular movement of the sector plate 23. The sector plate carries a plurality of spaced lugs 46, 47. and 48 on its arcuate marginal portion. Stop screws 43 are threaded into the respective lugs to form abutments and each is secured in adjusted position by a set screw Vertically spaced lugs 5| and 52 are formed on one end of the bracket 20 to present a recess between them in which fits a swingable stop member 53 pivotally carried on a vertical hinge pin 54 connecting the "lugs 5| and 52. The stop member 53 is swingable forwardly to the full line stopping position shown in Figs, 1 and 3, where it strikes the vertical wall of the recess, as seen in Fig. 3, and is swingable rearwardly out of stopping position to the dotted line'position of Figs. 1 and 3. hits stopping position, the stop member lies in l the arcuate path of movement of the stop screws 49, a selected one of the stop screws being en-- gageable with the upper face of the stop member in a direction substantially parallel to the axisof the hinge pin 54. The plane of the'stopping face of the stop member is perpendicular to the axis of the hinge pin 54, and the dimension of the stop member along the pivotal axis thereof is relatively long to insure rigidity, such'axial dimension being at least as great as the distance from the pivotal axis to the abutment-engaging point of the stop member. The stop member is frictionally held in its stopping and inactive positions.

The assembly comprising the fence member 4|, sector plate 23 and bracket 20 is of unitary character and is capable of beingshifted transversely of the table, or removed from the table, after loosening the nut 33 by the slidable wrench member 35. During such shift or removal, the clamping plate 32 and projection 2| of the bracket 20' slide along the ways of the channel I6, which is open at opposite ends. When the fence assembly operator.

nut 33 is tightened to clamp the assembly firmly in place with the fence member 4| extending longitudinally of the table and at right angles to the axis of the cutter-head.

If the fence is to be used in the vertical position shown in full lines in Fig. 1, it is tilted to a position permitting the stop member 53 to be swung forwardly into the path of the stop screw 49 of the lug 41. The fence is then tilted in a clockwise direction, as viewed in Fig. 1, to bring this stop screw into engagement with the stop member, which places the fence in an accurate vertical position. If the fence is to be used in angular positions other than the vertical position, the stop member is swung to its rearward position out of the path of the lugs 46, 41, and 28, either by the operator's fingers, or by cam action of one of the lugs. By tilting the fence counter-clockwise from the Fig. 1 position, the lug 46 is brought into cam engagement with the lower and side edges of the stop member 53 to swing the stop I member out of stopping position. The ing 46 may thus pass the stop member if the fence is to be used in the 45 position indicated by dotted lines to the left in Fig. 1, or the lug 41 may pass the stop member if the fence is to be used in the 135 position. For each of the latter positions, the stop member is returned to its forward stopping position to insure accurate placement of the fence. Upon tilting the fence counter-clockwise from the 135 position indicated by dotted lines at the right in Fig. 1, the stop member can be swung rearwardly out of stopping position by cam engagement with the lug 41.

By means of the adjustably mounted fence, the work-piece may be guided for receiving cuts at various selected angles. If desired, the stop screws can be adjusted to provide for fence angles other than those indicated. The swingable stop member and stop abutments are here shown to be mountedon the bracket and fence member, respectively, but in some instances this relation may be reversed.

When the sector plate 23 is to be clamped to, or

released from, the bracket 20, the wrench memshown in Fig. 2 to engage the nut 33. The fence may thus be clamped at a selected position along the table without disturbing the angular adjustment of the fence, and while the fence is clamped to thetable the fence maybe adjusted toa desired angular position, both adjustments being effected independently by the same actuating member, which is so placed as to be convenient to the The threads on the tube 25 and bolt 3| are preferably bothright-hand, so that both clamping operations are effected by clockwise rotation of the wrench member.

While the invention is here shown to be embodied in a fence for. ajointer table, it will be obvious that it is applicable generally for guiding work on the tables of various machine tools.

What I claim as new and desire to'secure'by Letters Patent is:

1. The combination, with a machine table having ways, of a member slidable along said ways, an angularly adjustable gage-havinga'pivotal connection with said-member, means for clamping said member to said table, means for clamping said gage to said member in angularly adjusted position, and an actuating member movably carried by said slidable member and shiftable thereon to different positions for selectively operating said member-clamping I means and gage-clamping means.

2. The combination, with a machine table having ways, of a member slidable along said ways, an angularly adjustable gage having a pivotal connection with said member, means for clamping said gage to said member including a. tube, and means passing through said tube for clamping said member to said table.

3. The combination, with a machine table having ways, of a member slidable along said Ways and having a projecting hollow portion, an angularly adjustable gage having a pivotal connection with said member and having an opening receiving said hollow portion therethrough, a nut threaded on said hollow portion to clamp said gage to said slidable member, a bolt extending through said hollow portion and having a head portion engageable with said table, and a nut threaded on said bolt to clamp said slidable member to said table. I

4. The combination, with a machine table having ways, of a member slidable along said ways, an angularly adjustable gage having a pivotal connection with said member, a threaded tube secured to said member and passing through said gage, a nut on said tube for clamping said gage to said slidable member, a bolt passing through said tube and having a head portion engageable with the table, a nut on said bolt spaced axially from said first nut for clamping said slidable member to said table, and a wrench member surrounding said bolt at a region between said nuts and shiftable axially to selectively engage said nuts.

5. The combination, with a machine table, of an angularly adjustable gage movable along said table, means for releasably retaining said gage against movement along said table and for clamping said gage in angularly adjusted position, said means including a pair of rotatable members one of which effects the retention of said gage against movement along said table and the other of which eifects the clamping of said gage in angularly adjusted position, and an actuator movably mounted on said meansand shiftable thereon to different positions for selectively operating said rotatable members.

6. The combination, with a machine table, of an angularly adjustable gage movable along said table, and means for releasably retaining said gage against movement along said table and for clamping said gage in angularly adjusted position, said means including a pair of clamping members one of which effects the retention of said gage against movement along said table and the other of which efiects the clamping of said gage in angularly adjusted position, one of said members passing through the other.

HERBERT E. TAUTZ. 

